i was still working _____ and off as a waitress to support myself.

mr. Russell served ________ president of the association for fifteen years.

the oldest parts of the castle date _______ to 1560, and were built by king frederick ii, after whom the palace is nameD.

the country is very keen to __________ the winter olympics in six years' time.

her work is sometimes good, but the problem is she's not __________.

he repeatedly promised __________ taxes in his campaign.

we ________ a few changes to the team for tonight’s match.

we must find a way to _______ these problems before it's too late.

john ________ difficulty in keeping up with the conversation because he is not a native english speaker.

the raccoon has a strong preference for _____ feeding.

nancy had to push herself forward to ____ a promotion.